Research / 2021 / Article / Fig 2

Research Article

Electron-Beam Irradiation Induced Regulation of Surface Defects in Lead Halide Perovskite Thin Films

Figure 2

Morphological changes of MAPI films upon e-beam irradiation. (a) Optical image of MAPI1-1 to MAPI10-10. MAPI shows different colors with various e-beam dose treatment. (b) SEM image of MAPI1-1 to MAPI10-10. arrays centered at MAPI2-2, MAPI6-4, and MAPI9-9 are marked with red, green, and blue box. (c) SEM image of MAPI0 with grains densely packed. (d–f) Corresponding magnified SEM images of arrays shown in (b). (g–i) Corresponding magnified SEM images of MAPI2-2, MAPI6-4, and MAPI9-9.